EPO and chronic obstructive pulmonary disease: The area under the curve for erythropoietin was 0.688 (95% CI: 0.545-0.830, p=0.015), with an optimal cut-off of 9.74, sensitivity of 61.2% (95% CI: 58.1-64.3) and specificity of 65.0% (95% CI: 61.8-68.3).<h4>Conclusions</h4>Iron status parameters do not differ between WT and HH groups of stable COPD patients.